Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
Again rhythm more readily admits of rests [*](i.e. in the musical sense. ) although they are found in metre as well. Greater license is, however, admitted when the time is measured by the beat of the feet or fingers, [*](i.e. in musio. ) and the intervals are distinguished by certain symbols indicating the number of shorts contained within a given space: hence we speak of four or five time ( τετράσημοι, or πεντάσημοι ) and others longer still, the Greek σημεῖον indicating a single beat.
In prose the rhythm should be more definite and
For example, I have come across tiresome grammarians who attempted to force prose into definite metres, as though it were a species of lyric poetry. Cicero, [*]( See Or. xx. 67, sqq. ) indeed, frequently asserts that the whole art of prose-structure consists in rhythm and is consequently censured by some critics on the ground that he would fetter our style by the laws of rhythm.
For these numeri, as he himself expressly asserts, are identical with rhythm, and he is followed in this by Virgil, who writes,
and Horace, who says,Ecl. ix. 45. [*](I have the numbers, could I but find the words. In this case the nearest translation of numeri would be tune. But, strictly speaking, it refers to the rhythm of the tune. )
- Numeros memini, si verba tenerem
Odes. IV. ii. 11. [*](And sweeps along in numbers free from laws.)
- Numerisquefertur
- Lege solutis.